Device for detecting failure of battery cells
CA 2101280 C · Owner: Fiorina, Jean-Noel · Inventors: Lailler, Patrick; Fiorina, Jean-Noel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Failure of one or more battery cells, for example of an inverter battery bank is detected by monitoring the second derivative (D) of the curve U(t) representative of the voltage U at the terminals of the battery in the course of discharge. If the second derivative is positive (F7) this is significant of a failure.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed July 26, 1993 and granted April 17, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 26, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.